Hi Guys, further to earlier post on my Haenel Sportsmodell 49a repeater. This will be sold in the future but I am hoping to shoot it 1st. The problem lies in the ammo size. 0.173 (4.4mm) BB's, I have been told standard .177's are no good & all i've found so far are a listing with "Diana Oktoberfest copper coated BB's Calibre 4.4/ .173 bullet shaped lead balls" in Germany and even they are out of stock. anyone got similar gun?